1 /* $NetBSD: vmparam.h,v 1.58 2024/09/07 06:17:37 andvar Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #ifndef _ARM_ARM32_VMPARAM_H_ 39 #define _ARM_ARM32_VMPARAM_H_ 40 41 #if defined(_KERNEL_OPT) 42 #include "opt_kasan.h" 43 #endif 44 45 /* 46 * Virtual Memory parameters common to all arm32 platforms. 47 */ 48 49 #include <sys/cdefs.h> 50 #include <arm/cpuconf.h> 51 #include <arm/arm32/param.h> 52 53 #define __USE_TOPDOWN_VM 54 #define USRSTACK VM_MAXUSER_ADDRESS 55 56 /* 57 * ARMv4 systems are normally configured for 256MB KVA only, so restrict 58 * the size of the pager map to 4MB. 59 */ 60 #ifndef _ARM_ARCH_5 61 #define PAGER_MAP_DEFAULT_SIZE (4 * 1024 * 1024) 62 #endif 63 64 /* 65 * Note that MAXTSIZ can't be larger than 32M, otherwise the compiler 66 * would have to be changed to not generate "bl" instructions. 67 */ 68 #define MAXTSIZ (128*1024*1024) /* max text size */ 69 #ifndef DFLDSIZ 70 #define DFLDSIZ (384*1024*1024) /* initial data size limit */ 71 #endif 72 #ifndef MAXDSIZ 73 #define MAXDSIZ (1856*1024*1024) /* max data size */ 74 #endif 75 #ifndef DFLSSIZ 76 #define DFLSSIZ (4*1024*1024) /* initial stack size limit */ 77 #endif 78 #ifndef MAXSSIZ 79 #define MAXSSIZ (64*1024*1024) /* max stack size */ 80 #endif 81 82 /* 83 * While the ARM architecture defines Section mappings, large pages, 84 * and small pages, the standard MMU page size is (and will always be) 4K. 85 */ 86 #define PAGE_SHIFT PGSHIFT 87 #define PAGE_SIZE (1 << PAGE_SHIFT) 88 #define PAGE_MASK (PAGE_SIZE - 1) 89 90 /* 91 * Mach derived constants 92 */ 93 #define VM_MIN_ADDRESS ((vaddr_t) PAGE_SIZE) 94 95 #define VM_MAXUSER_ADDRESS ((vaddr_t) KERNEL_BASE - PAGE_SIZE) 96 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 97 98 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t) KERNEL_BASE) 99 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t) -(PAGE_SIZE+1)) 100 101 #if defined(_KERNEL) 102 // AddressSanitizer dedicates 1/8 of kernel memory to its shadow memory (e.g. 103 // 128MB to cover 1GB for ARM) and uses a special KVA range for the shadow 104 // address corresponding to a kernel memory address. 105 106 /* 107 * kernel virtual space layout without direct map (common case) 108 * 109 * 0x8000_0000 - 256MB kernel text/data/bss 110 * 0x9000_0000 - 1536MB Kernel VM Space 111 * 0xf000_0000 - 256MB IO 112 * 113 * kernel virtual space layout with KASAN 114 * 115 * 0x8000_0000 - 256MB kernel text/data/bss 116 * 0x9000_0000 - 768MB Kernel VM Space 117 * 0xc000_0000 - 128MB (KASAN SHADOW MAP) 118 * 0xc800_0000 - 640MB (spare) 119 * 0xf000_0000 - 256MB IO 120 * 121 * kernel virtual space layout with direct map (1GB limited) 122 * 0x8000_0000 - 1024MB kernel text/data/bss and direct map start 123 * 0xc000_0000 - 768MB Kernel VM Space 124 * 0xf000_0000 - 256MB IO 125 * 126 */ 127 128 #ifdef KASAN 129 #define VM_KERNEL_KASAN_BASE 0xc0000000 130 #define VM_KERNEL_KASAN_SIZE (VM_KERNEL_ADDR_SIZE >> KASAN_SHADOW_SCALE_SHIFT) 131 #define VM_KERNEL_KASAN_END (VM_KERNEL_KASAN_BASE + VM_KERNEL_KASAN_SIZE) 132 #define VM_KERNEL_VM_END VM_KERNEL_KASAN_BASE 133 #else 134 #define VM_KERNEL_VM_END VM_KERNEL_IO_BASE 135 #endif 136 137 #ifdef __HAVE_MM_MD_DIRECT_MAPPED_PHYS 138 #ifdef KASAN 139 #error KASAN and __HAVE_MM_MD_DIRECT_MAPPED_PHYS is unsupported 140 #endif 141 #define VM_KERNEL_VM_BASE 0xc0000000 142 #else 143 #define VM_KERNEL_VM_BASE 0x90000000 144 #endif 145 146 #define VM_KERNEL_ADDR_SIZE (VM_KERNEL_VM_END - KERNEL_BASE) 147 #define VM_KERNEL_VM_SIZE (VM_KERNEL_VM_END - VM_KERNEL_VM_BASE) 148 149 #define VM_KERNEL_IO_BASE 0xf0000000 150 #define VM_KERNEL_IO_SIZE (VM_MAX_KERNEL_ADDRESS - VM_KERNEL_IO_BASE) 151 #endif 152 153 #endif /* _ARM_ARM32_VMPARAM_H_ */ 154
Indexes created Mon Sep 29 03:10:08 GMT 2025